Attachment for a cap



FIG. 1 is a front, bottom, and left side perspective view of an attachment for a cap according to our new design;

FIG. 2 is a rear, bottom, and right side perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right side elevation view thereof;

FIG. 8 is a left side elevation view thereof; and,

FIG. 9 is a top, front, left side perspective view showing the first embodiment of the attachment attached to a cap.

The broken line outline of the cap in FIG. 9 depicts environmental structure of the attachment for a cap and forms no part of the claimed design. The broken lines and unshaded areas within the broken line outlines along the surfaces of the attachment for a cap define portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for an attachment for a cap, as shown and described. 